Fabi.ai vs PostHog — Pricing, Plans, and Verified Costs (2026)
PostHog starts at Free. Fabi.ai uses custom pricing — request a quote to compare.
How pricing works
These two tools don't price the same way, so the headline numbers below aren't directly comparable until you plug in your own volume.
- Fabi.ai (Per Seat) — Fabi.ai bills on a fixed plan, so the listed price is what you pay regardless of volume.
- PostHog (Per Usage) — PostHog bills purely on usage — Free up to 1M events/mo, then usage-based. There is no fixed per-seat fee, so the monthly cost depends entirely on how much you consume.
Per-minute, per-credit and per-token rates exclude any downstream model, speech or telephony costs unless the vendor states otherwise.
AI data notebook — collaborative analytics with natural-language querying and Python/SQL code execution. Pricing: Free (limited), Pro $20/user/mo (unlimited queries + collaborators), Team $60/user/mo (custom data connectors + SSO), Enterprise custom. Popular with data teams that want a Jupyter-style notebook with AI built in.
Open-source product analytics + feature flags + session replay + surveys, positioned as the all-in-one alternative to Mixpanel + LaunchDarkly + FullStory + Typeform. Distinctive for self-hostable free tier (unlimited events on your infra) and its "we're the open-source everything" positioning. Cloud priced free-$450+/mo based on events + recordings. Popular with technical founders who don't want to stitch 4 tools together and prefer OSS over vendor lock-in.
All plans compared
| Tier role | Plan | Fabi.ai monthly | Fabi.ai annual | PostHog monthly | PostHog annual |
|---|---|---|---|---|---|
| Free / starter | Free | Free | Free | Free | Free |
| Entry paid | Pro / Boost add-on | $20 | $16 | $250 | — |
| Pro / power | — / Scale add-on | — | — | $750 | — |
| Teams | Team / — | $60 | $48 | — | — |
| Enterprise | Enterprise / Enterprise add-on | Custom | Custom | $2000 | Custom |
Tier names differ across vendors. Rows are aligned by tier role, not name. Full tier structures on each tool's page.
What each is best for
Fabi.ai is worth it if… Fabi is worth it for data teams that already write SQL and Python but want AI assistance for exploration + faster iteration. Pro ($20/user/mo) suits solo analysts; Team ($60/user/mo) suits small data teams with SSO needs.
PostHog is worth it if… product/growth teams that want product analytics + session replay + feature flags + A/B testing + surveys in one open-source platform — particularly if you value self-host option and pay-as-you-go pricing. Free tier includes 1M events + 5K replays/mo; pay-as-you-go beyond; add-ons for SSO/security/data warehouse.
Bottom line: Choose based on how you want to pay — Fabi.ai is per seat, PostHog is per usage.
Choose Fabi.ai over PostHog if…
Choose Fabi.ai if…
- You want fixed-price predictability (per seat, custom pricing).
- You match the profile Fabi.ai is built for: Fabi is worth it for data teams that already write SQL and Python but want AI assistance for exploration + faster iteration.
- You need a general-purpose analytics & data option rather than a vertical-specific one.
Choose PostHog if…
- You want to pay only for actual usage (per usage, a free entry tier).
- You match the profile PostHog is built for: product/growth teams that want product analytics + session replay + feature flags + A/B testing + surveys in one open-source platform — particularly if you value self-host option and pay-as-you-go pricing.
- You need a general-purpose analytics & data option rather than a vertical-specific one.
At a glance
| Fabi.ai | PostHog | |
|---|---|---|
| Free plan | Yes | Yes |
| Entry price | Custom | Free |
| Enterprise available | Yes | Yes |
| Pricing model | Per Seat | Per Usage |
| Last verified | — | September 12, 2026 |
| Full pricing | View full pricing | View full pricing |
Pricing last verified September 12, 2026. Tracked daily.